Grader.



N. P. FRANTZEN.

GRADEH.

grrucmou FILED APR. 12. 1915.

Pafented July 6, 1915.

COLUMBIA PLANOORAPH cm. WASHINGTON, D. c.

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To all whom/it mag 'gqiioer'fl' t y Be it known thatQl Nfns, P. FnAN ZENQ-a citizen of "the United ;.S t'ates,':resi ding, t Gowrie, inthe county of] Webster and State, of Iowa, haveinventedj-certain new and useful Improvements in Graders,fof whichthe following is a, specificationfreferenc being hadto the accompanying drawings. 7 1 This invention 'comp'rehendsf'certain new and useful improvements 'in separators or graders and relates particularly to a device designed for use in grading cornnalthough itis to beunderstood that the-invention I i v f ls t ita y m un d, s d ra lsrf The invention has for its primary ob-t jecta durable and eflic'ient c'on'structionfof I grading device embodying elevated frame or stand'pro'vided withe pluralityof discharge chutes 'or' spouts to Iwhichf, sacks, 20

not limited thereto.

may be connected, a reciprocable grading device being movable upon the frame, the form of a boxer casingtdisposed underneath a hopper heldin an elevated position, the

corn being dumpedhinto the hopper and from thence to the reciprocating member which is moved back and forth over the spouts whereby, the corn will .be shaken down intothe different sacks and thereby separated, according tojthehsizes of tthe grains. And the invention also aims ,to generally. improve devices of this class so as to render .them more useful and commerciallydesirable.

With theabove and otherv objects in View, as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and combinations of the parts that I shall hereinafter more fullydescribe and-claim.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawing, in

which,

Figure 1 is a longitudinal sectional view of a grading device embodying the improvements of my invention, Fig. 2 is a transverse sectional view thereof on the line 2-2 of Fig. 1.

Correspondingand like parts are referred to in the following description and designated in all of the views of the accompanying drawing by like reference characters. Referring to the drawing, the numeral '1 designates a supporting frame which may be provided with legs 2 of any desired type I a specificatien of LettersIatent V Patented 1915. a i n neteenm nni ,1915. "sega'njaze m Y l 7 I charge chutes or' spouts, there being three of thes 1 h Pr se i t nceacd si ted 3,41 and ,5, respectively, the (upper; ,ends of thesespouts being eovered with; screens, 6,;

he 1 301: e i f hescreens arv-is i ns; n: s gw erebyt one. cr en--.-Wi m one grade; r size of ycorn and jhe Jother.

i Upon frame arallelor-track porting .the reciprocatory shaker 8. I This shaker is in the ;'-form of a casing including i side and endwalls, and above the sameaf hopper! is arranged to discharge the seed into (said shaken, This hopper is; braced and gsupported; .by means offbars 10 which are rlg dly, fixed at :their lower ends upon the frame structure. The reciprocatory shaker 8 is-j pr ovided with a bottom con s1st1ng of atwlre screen or; s1eve,;indicatedj at 11, W'Thehopper. 9 isformedwith agdis charge spout 12 in which a sliding valve 13is;mounted,; whereby the feed of;the; seed" to the shaker; be. controlledkor; completely cut offlwhen desired, A horizontallyv isp d ext n ion; or p m; .1 1ers; tp ovided upon one end-{of the shaker 8 for. a

In order to impart a reciprocatory'movement to the grading,. element, theshakery8t s pivota y Q te ato e etw e nd of a pitman or connecting rod 1 1, said,pit--,

manlbeing inturnconnected to an eccentric disk and'a sprocket wheel 15 around which a sprocket: chain-l6 ;is passed, said chain" alsojpassing around a hand-wheel 17 which is journaled at one side of theframe 1.

From the above description, taken'in connection with :the accompanying drawing,

the operation of the device will be clearly" understood. When the operator turns or rotates the wheel 17 by means of the handle 18, rotationis, of course, transmitted to the eccentric 1'5, and the latter, through the medium of the connecting rod 14:, imparts a reciprocatory movement'to the shaker upon.

the guide rails 7. The corn deposited in the shaker 8 from the hopper 9 is thus agi tated and a portion thereof falls through the mesh of the screen or sieve 11 upon the screens 6 of the hoppers 3 and 4:; The

' Ward movement.

larger grains of corn are gradually directed upon the platform or extension 8' and. dropped therefrom upon the wide mesh screen 6 of the spout 5. The corn which falls through the sieve 11 of the shaker is graded into difi'erent sizes, the smaller size falling through the fine mesh screen of the spout 3 while the next size falls through the wide mesh of the sieve 6 for the spout 4. It will be understood that the grain is fed from the hopper 9 upon the reciprocating screen in sufficient quantity that the same collects in a pile immediately beneath the discharge spout of the hopper and the feed of the grain to the shaker screen isstarted when the screen is at the limit of its for- Thus, in the rearward movement of the shaker screen, the grain will be agitated and the larger particles will roll forwardly upon the platform extension 8. The end walls of the reciprocating screen, engaging the grain which falls upon the screens 6' of the spouts 3 and 4:, shifts or agitates this grain over the screen surfaces so that in such movement, the particles of grain will be separated according to size, and passed through the respective screens 6. It will thus be understood that, in the reciprocating movement of the shaker 8, a natural separation of the grain into different sizes takes place owing to the difference in the specific gravity of the grain kernels and the rapid reciprocation of the shaker. Thus, the corn is graded into several sizes and finally deposited into the respective sacks or bags 19.

While the accompanying drawing illustrates what I believe to be the preferred embodiment of my invention, it is to be understood that the invention is not limited in this respect, but that various changes may be made in the details of construction, arrangements and proportions of the parts without departing from the scope of the invention as defined in the appended claims.

Having thus fully described my invention, What I desire to claim and secure by Letters Patent is 1. A grading device including spaced guide rails, a reciprocatory shaker slidably mounted upon said rails, ahopper supported upon the frame above said shaker, said shaker being provided with a wire screen fabric of uniform mesh throughout its area, discharge spouts mounted in the frame below said shaker, each of said spouts having a covering or screen, said screens being of relatively different mesh, a platform extending longitudinally from one end of the shaker, and means to reciprocate said shaker and agitate the grain falling through the screen of the shaker upon the screen of said spouts, the larger grains in the shaker being gradually directed therefrom in the agitation of the grain over said platform.

2. A grading device including spaced guide rails,'a reciprocatory shaker mounted upon said rails, a hopper supported upon the frame above said shaker, discharge spouts mounted in the frame below said shaker, said spouts having grading screens of relatively different mesh, an additional discharge spout mounted in the frame having a grading screen of comparatively wide mesh, .said shaker, in its reciprocatory movement, depositing the grains of different sizes upon the screens of the first named discharge spouts, a platform extension pr0- jecting longitudinally from one end of the shaker through which the relatively large particles of grain pass and are deposited upon the grading screen of said additional discharge spout, receiving receptacles attached to each of said spouts, and means for actuating said shaker.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

-NILS PEDER FRANTZEN.

Witnesses ALBERT W. JOHNSON, REUBEN JoHNsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

